Grain-conveyer



(No ModeL) R. DUNBAR.

GRAIN GONVEYER.

N6. 257,855". Patented May16, 1882.

' Inientor.

flow N. PETERS. Pnowumo ra ber. Wishingtun, D c.

" UNITED STATES PATENT OFFICE.

ROBERT DUNBAR, OF BUFFALO, NEVV YORK.

GRAlN-CONVEYER.

SPECIFICATION forming part of Letters Patent No. 257,855, dated May 16,1882,

Application filed January 28, 1882. (No model.)

To all whom it may concern:

Be it known that LRoBnnr DUNBAR, a citizen of the United States,residing in Buffalo, inthe county of Erie and State of New York, haveinvented certain new and useful Improvements in Elevators, of which thefollowing is a specification.

The object of my invention is to provide a suitable means for supportinga vertically-adjustable elevator and connecting therewith a Figure 1 isa front elevation of the apparatus and a section through some of thefloors of an elevator-building, showing also a part of one of thesupporting-beams broken away so as to expose a portion of the supportingand horizontally-adjusting mechanism. Fig. 2 is a side elevation of thesame. Fig. 3 is an enlarged front elevation of the supporting device anda portion of the elevator and gearing,

.a part of one of the supporting-beams being broken away; and Fig. 4represents a side elevation of the same, partly in section, showing inaddition a section through the upper beam or floor and a side elevationof one of the top pulleys over which one of the cables or chains forlifting or lowering the elevator is passed.

A represents the usual frame-work of an elranged so as to slide or movebetween the ,ened together beams 11 I), (see Figs. 3 and 4,) and arefastby a beam, E, and bolt E.

(Shown in Fig. 3.) A series of wheels, 0, are secured to each side ofthe supports D D so as to turn easily thereonand roll back. and forth onthe beams b I (See Fig. 4.) A screwshaft, 0 provided with a pulley, (1,passes through nuts in the bars 1) D The pulley d is-connected by acable, chain, or belt, at, to an engine-pulley, (1 If desired, anadditional strengthening or supporting bar, F, may be used in additionto the bars 0 C, as shown in Fig. 3. The lower engineshaft, F, isprovided with windingdrums Gr and other necessary connections, andcables G for raising or lowering the elevator, and a pulley, 6,connected with the engine pulleys by a cable, f, the lower engine beinglocated on afoundation, F for giving the horizontal movements oradjustments to the elevator, the frame H, tighteningpulley frarne H, andengine I and its connections. In Fig. 1 I have shown a screw-shaft, 6arranged below the beams 11 I), and in Fig. 3 it is shown as arrangedbetween said beams.

1 l. are the pulleys for operating the elevator, and J J the pulleys onthe engine-shaft, which connects with them by means of a cable, chain,or belt. i

The engine I is arranged in slideways g g, and is moved from one side ofthe frame A to the other by the screw-shaft a, while one or morescrew-shafts, E operate the frame H. The cables for liftingtp'r loweringthe elevator pass from the winding-drums G, to which they are fastenedsecurely, to the upper pulley, K,

over which itpasses, and then under-and around the pulley K, and" fromthence up to the upper part of the frame, to which it is firmly fastenedby-a bolt, G (See Fig. 2..) The pulleys K are held in pliice by the ironstraps L, (see Figs. 3 and 4,) *ildare so formed that the wheels 0 canpass unler them as the elevator is being adjusted back and forthhorizontally.

M in Fig. 2 represents the cables for connecting the wheels I"I with theengine wheels or pulleys J J for running the elevator.

The operation of my invention will be fully understood from theforegoing description and a'ecompanyin g drawings.

I claim- 1. An elevator, B, suspended on rollers c and their supportingand connecting mechanism O G D I) and beams E E, substantially asspecified, in combination with a screw-shaft,

0 provided with a pulley, e, for connecting by l theholizontallyadjustable screw-shafts, the a suitable cable,f, with theengine-pulley e; for winding-drums G and their connecting-cables thepurpose of giving it a horizontal adjustand pulleys, and a suitableengine, whereby ment, substantially as described. either a horizontal orvertical adjustment may 5' 2. Ar elevator, B, provided with rollers 0 begiven to the elevator. and their connecting and supporting mechan-ROBERT DUNBAR ism O O D D and beams E E, as specified,

and having the driving-pulleys 1 1 frames H Witnesses:

H and tightening-pulleys, and the engine I JAMES SANGS'PER, 10 and itsconnecting-cables, in combination with I HUGH SANGSTER.

